Basic Operations

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Order of Operations
Who Wants to be a Millionaire Order of Operations
Selecting an Operation
Mathfrog: Time challenge of Order of Operations
Funbrain: Different skill levels, placing numbers in correct order to match the solution.
Matching Game: Solve the order of operations and match the correct answer to reveal pieces of the picture.
Operation Snowball Game: Pick to correct operation to use by reading the word problem.
Basket Math: Game of Order of Operations

Mad Minutes- Test your Math Facts
Mrs. B: Mad Minutes
Interactive Flashcards

Patterns and Sequences
Number Sequencing Game

Integers & Number Theory

Locate Aliens on Coordinate Grid

Adding Real Numbers - Explorelearning.com
Interactive "Gizmo" illustrating addition of integers on a number line. Comes with exploration guide and assessment questions. By subscription, but has Free 30 day trial account.
XP Math Multiplying Integers
Slider Math: Multiplying Integers
Color Chips Addition
The user drags positive/negative chips to the working area, then combines them in pairs to see the sum.
MathCar Racing
Out drive Funbrain's math car by getting the highest score and practice integer operations.
Choose operation game
Choose the range to include negative numbers in this fun game to get practice in how to add/subtract/multiply/divide integers.
Color Chips Subtraction
Drag positive/negative chips and zero pairs into working area as instructed, then subtract.
Integers: Operations with Signed Numbers
Clear and cute presentations of the rules for integer operations, including The Party in the Mathland for determining the sign of multiplication/division result. Has a link to practice exercises with instant feedback.
Space Coupe to the Rescue
By choosing a positive or negative number, the player controls the vertical position of a spaceship. If the spaceship reaches the same vertical position as a virus pod, the pod is destroyed.
Flashcards with Negative Numbers
Interactive flashcards at AplusMath.com.
How to teach integers
An article for the teacher about how to teach integer operations. Includes Add and Subtract Integers and Multiply & Divide Integers fact sheets (PDF).

Absolute Value
AAA Math: Absolute Value
Soft Schools: Absolute Value
Number Balls: Ordering using Absolue Value

Integer Practice
Create your own number line for kids to practice
XP Math: Comparing Integers
Math Goodies: Comparing Integers
Math Wizz Leveled Problems
Line Jumper
Integer Rules
Mystery Picture
Integer Practice: All Operations
Virtual Manipulatives: Click and Drag Chips to represent the Integer problem and then solve.
Integer Flashcards: Choose the operation you want to practice.
Slider Math: Adding Integers
Slider Math: Subtracting Integers
Slider Math: Multiplying Integers
IXL Math: Multiplying Integers
Slider Math: Dividing Integers
IXL Math: Dividing Integers

Integer Quizzes
Adding Integers Quiz
Subtracting Integers Quiz
Multiplying Integers Quiz
Dividing Integers Quiz

Powers and Exponents
Exponent Practice
AAA Math: Standard Form to Scietific Notation
AAA Math: choose one of three skill levels of Scientific Notation
AAA Math: Scientific Notation to Standard Form
Quia: Escape King Kong by correctly answering questions on Scientific Notation
XP Math: Converting large numbers into Scientific Notation
Regents Prep: Practice with Scientific Notation, three parts using paper and pencil first then check your answers


Decimals

AAA Adding Decimals Practice
AAA Subtracting Decimals Practice
EstimateEstimate to which decimal the arrow is pointing on the number line. The game has the words "Evaluation version" across the screen, but is still playable.
Mathematical Interactivities has several games related to fractions and decimals in their Number section, including:
  • Decimal Challenge - Guess the decimal number between 0 and 10. Each time feedback tells whether your guess was too high or too low.
  • Sock - Push the green blocks into the holes to make the target number.
Smaller and smaller maze
Practice ordering decimal numbers and find your way through the maze.
Decimal and square root gizmos from Explorelearning.com
Interactive "Gizmos" illustrating comparing and ordering decimals, multiplying with decimals, sums and differences with decimals, solving equations with decimals, and exploring square roots. Exploration guide and assessment questions included. By subscription, but has Free 30 day trial account. Excellent resource.
Decimal and whole number jeopardyReview place value and comparing and rounding numbers. Also, practice number patterns.
Ordering Decimals, Fractions, Negative Numbers
Comparing fractions, decimals, and percentagesHas factsheets, a nice matching pairs game, online quiz, and printable worksheets.
Fraction Decimal ConversionPractice fractions vs. decimal numbers with a matching game, concentration, or flash cards.

Fractions

Simplifying Fractions Games
http://www.rainforestmaths.com/
Comparing fractions, decimals, and percentagesHas factsheets, a nice matching pairs game, online quiz, and printable worksheets.
Fraction Decimal Conversion
Practice fractions vs. decimal numbers online with a matching game, concentration, or flash cards.
Online Fraction Calculator
Add, subtract, multiply or divide fractions and mixed numbers.
Fraction/Decimal Worksheets
Change fractions to decimal numbers or decimal numbers to fractions.
Fractions vs. Decimals Calculator
An online tutorial with interactive calculators about fractions as recurring or terminating decimals.
Fractioncity
Make "fraction streets" and help kids with comparing fractions, equivalent fractions, addition of fractions of like and unlike denominators while they drive toy cars on the streets. This is not an online activity but instructions of how to do it at home or at school.
FunBrain: Fresh Baked Fractions: Pick the one that IS NOT an equivalent fraction

Prime Factorization
Math Goodies: Factor Tree Game
AAA Math: identify numbers as either prime or composite

Comparing Fractions
Shodor Fraction Four: Connect Four game on comparing fractions
AAA Math: Comparing Unlike Fractions

Operations with Fractions
Adding Fractions same denominators
Adding Fractions unlike denominators
Subtracting Fractions same denominators
Subtracting Fractions unlike denominators
AAA Math: Multiplying fractions
Multiplying Fractions to reveal Mystery Picture
Dividing Fractions Visual Fractions



Percents and Proportions

BBC Comparing Decimals, Fractions and Percents
Math Goodies: Changing Fractions to Decimals to Percents
pbskids: Percents & Fractions
Brain Pop Quiz
AAA Math: Finding Unit Rates
Proportions Quiz
Estimating with Percents Test Prep
Working with Percents (Interest, Sales Tax) AAA Math
Dirt Bike Proportions: race dirt bikes to find equal proportions
Ratio Stadium: Race cars to compare ratios to win the Stadium Cup
Quizville Dot Game: change the % of colored dots using the percent proportion formula
IXL Math: Which is the Better Coupon


Percent Proportion
5 questions on Percent Proportion-scroll all the way down
Amby's Math
Amby's Math: More Percent Proportion Practice
Math123xyz Percent Proportion Problems

Math Videos on Proportions & Percents
Loyola University

Calculating Tip
**Penguin Waiter**Simple game where you calculate the correct tip to leave the penguin waiter.

**Virtual Manipulative: Percentages**Interactive tool where you fill in any two of the three 'boxes' (whole, part, and percent) and it will calculate the missing part and show the result visually in two ways.
**Using the Proportion Method to Solve Percent Problems**Clear illustration of the proportion method, how to solve it, and online practice exercises.
**Money Math**Crystal clear tutorial on interest.

Sales Tax
AAA Math: Calculating Sales Tax

Ratios

Math Snacks: Ratios Bad Date Video

All About Ratios: Try these creative, online exercises for teaching or reinforcing your skills and ratios. A quiz follows the exercises.
http://math.rice.edu/~lanius/proportions/


Variables & Expressions

Classzone: Writing Verbal Expressions Online Worksheet
Classzone Animation: Variables and Expressions Animations